I am attempting to tweak Hyper-V Core Server 2019 (host) power thresholds, however my attempts have failed so far.
Scenario
The newly created Hyper-V 2019 Server (part of Workgroup, not yet a Domain) has been attached to an external UPS. Battery status is provided through a USB cable. The UPS is listed in the device list and battery status can be queried through Powershell gwmi win32_battery command.
My goal is to shutdown the machine when Low level threshold (30%) is reached, to allow graceful shutdown of both VMs and host.
As the HV machine has no GUI, power plan settings must be tweaked by other means.
My first attempt was to change settings through Group Policy Editor snap-in in MMC from a remote computer: Computer configuration > Administrative Templates > System > Power Management > Notification Settings > Low battery notification Level (& action). Forced GPUPDATE on HV machine, settings ignored!
I have then attempted to change setting through powercfg:
powercfg -setdcvalueindex SCHEME_CURRENT SUB_BATTERY BATLEVELLOW 30
powercfg -setdcvalueindex SCHEME_CURRENT SUB_BATTERY BATACTIONLOW 3
However also these settings are ignored, although they appear as correctly set when querying power plans:
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced)
GUID Alias: SCHEME_BALANCED
Subgroup GUID: fea3413e-7e05-4911-9a71-700331f1c294 (Settings belonging to no subgroup)
GUID Alias: SUB_NONE
Subgroup GUID: 0012ee47-9041-4b5d-9b77-535fba8b1442 (Hard disk)
GUID Alias: SUB_DISK
Power Setting GUID: 6738e2c4-e8a5-4a42-b16a-e040e769756e (Turn off hard disk after)
GUID Alias: DISKIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 238c9fa8-0aad-41ed-83f4-97be242c8f20 (Sleep)
GUID Alias: SUB_SLEEP
Power Setting GUID: 29f6c1db-86da-48c5-9fdb-f2b67b1f44da (Sleep after)
GUID Alias: STANDBYIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: 94ac6d29-73ce-41a6-809f-6363ba21b47e (Allow hybrid sleep)
GUID Alias: HYBRIDSLEEP
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: 9d7815a6-7ee4-497e-8888-515a05f02364 (Hibernate after)
GUID Alias: HIBERNATEIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: bd3b718a-0680-4d9d-8ab2-e1d2b4ac806d (Allow wake timers)
GUID Alias: RTCWAKE
Possible Setting Index: 000
Possible Setting Friendly Name: Disable
Possible Setting Index: 001
Possible Setting Friendly Name: Enable
Possible Setting Index: 002
Possible Setting Friendly Name: Important Wake Timers Only
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Subgroup GUID: 2a737441-1930-4402-8d77-b2bebba308a3
Power Setting GUID: 48e6b7a6-50f5-4782-a5d4-53bb8f07e226
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Subgroup GUID: 2e601130-5351-4d9d-8e04-252966bad054 (Idle Resiliency)
GUID Alias: SUB_IR
Subgroup GUID: 48672f38-7a9a-4bb2-8bf8-3d85be19de4e (Interrupt Steering Settings)
GUID Alias: SUB_INTSTEER
Subgroup GUID: 4f971e89-eebd-4455-a8de-9e59040e7347 (Power buttons and lid)
GUID Alias: SUB_BUTTONS
Power Setting GUID: 5ca83367-6e45-459f-a27b-476b1d01c936 (Lid close action)
GUID Alias: LIDACTION
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: 7648efa3-dd9c-4e3e-b566-50f929386280 (Power button action)
GUID Alias: PBUTTONACTION
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Possible Setting Index: 004
Possible Setting Friendly Name: Turn off the display
Current AC Power Setting Index: 0x00000003
Current DC Power Setting Index: 0x00000003
Power Setting GUID: 96996bc0-ad50-47ec-923b-6f41874dd9eb (Sleep button action)
GUID Alias: SBUTTONACTION
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Possible Setting Index: 004
Possible Setting Friendly Name: Turn off the display
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Power Setting GUID: a7066653-8d6c-40a8-910e-a1f54b84c7e5 (Start menu power button)
GUID Alias: UIBUTTON_ACTION
Possible Setting Index: 000
Possible Setting Friendly Name: Sleep
Possible Setting Index: 001
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 002
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000002
Current DC Power Setting Index: 0x00000002
Subgroup GUID: 501a4d13-42af-4429-9fd1-a8218c268e20 (PCI Express)
GUID Alias: SUB_PCIEXPRESS
Power Setting GUID: ee12f906-d277-404b-b6da-e5fa1a576df5 (Link State Power Management)
GUID Alias: ASPM
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: Moderate power savings
Possible Setting Index: 002
Possible Setting Friendly Name: Maximum power savings
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000002
Subgroup GUID: 54533251-82be-4824-96c1-47b60b740d00 (Processor power management)
GUID Alias: SUB_PROCESSOR
Power Setting GUID: 893dee8e-2bef-41e0-89c6-b55d0929964c (Minimum processor state)
GUID Alias: PROCTHROTTLEMIN
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000005
Current DC Power Setting Index: 0x00000005
Power Setting GUID: 94d3a615-a899-4ac5-ae2b-e4d8f634367f (System cooling policy)
GUID Alias: SYSCOOLPOL
Possible Setting Index: 000
Possible Setting Friendly Name: Passive
Possible Setting Index: 001
Possible Setting Friendly Name: Active
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000000
Power Setting GUID: bc5038f7-23e0-4960-96da-33abaf5935ec (Maximum processor state)
GUID Alias: PROCTHROTTLEMAX
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000064
Current DC Power Setting Index: 0x00000064
Subgroup GUID: 7516b95f-f776-4464-8c53-06167f40cc99 (Display)
GUID Alias: SUB_VIDEO
Power Setting GUID: 3c0bc021-c8a8-4e07-a973-6b14cbcb2b7e (Turn off display after)
GUID Alias: VIDEOIDLE
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0xffffffff
Possible Settings increment: 0x00000001
Possible Settings units: Seconds
Current AC Power Setting Index: 0x00000258
Current DC Power Setting Index: 0x0000012c
Power Setting GUID: aded5e82-b909-4619-9949-f5d71dac0bcb (Display brightness)
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000064
Current DC Power Setting Index: 0x00000028
Power Setting GUID: f1fbfde2-a960-4165-9f88-50667911ce96 (Dimmed display brightness)
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000032
Current DC Power Setting Index: 0x00000032
Power Setting GUID: fbd9aa66-9553-4097-ba44-ed6e9d65eab8 (Enable adaptive brightness)
GUID Alias: ADAPTBRIGHT
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000000
Subgroup GUID: 8619b916-e004-4dd8-9b66-dae86f806698 (Presence Aware Power Behavior)
GUID Alias: SUB_PRESENCE
Subgroup GUID: e73a048d-bf27-4f12-9731-8b2076e8891f (Battery)
GUID Alias: SUB_BATTERY
Power Setting GUID: 637ea02f-bbcb-4015-8e2c-a1c7b9c0b546 (Critical battery action)
GUID Alias: BATACTIONCRIT
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000000
Current DC Power Setting Index: 0x00000003
Power Setting GUID: 8183ba9a-e910-48da-8769-14ae6dc1170a (Low battery level)
GUID Alias: BATLEVELLOW
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x0000000a
Current DC Power Setting Index: 0x0000001e
Power Setting GUID: 9a66d8d7-4ff7-4ef9-b5a2-5a326ca2a469 (Critical battery level)
GUID Alias: BATLEVELCRIT
Minimum Possible Setting: 0x00000000
Maximum Possible Setting: 0x00000064
Possible Settings increment: 0x00000001
Possible Settings units: %
Current AC Power Setting Index: 0x00000005
Current DC Power Setting Index: 0x00000014
Power Setting GUID: bcded951-187b-4d05-bccc-f7e51960c258 (Low battery notification)
GUID Alias: BATFLAGSLOW
Possible Setting Index: 000
Possible Setting Friendly Name: Off
Possible Setting Index: 001
Possible Setting Friendly Name: On
Current AC Power Setting Index: 0x00000001
Current DC Power Setting Index: 0x00000001
Power Setting GUID: d8742dcb-3e6a-4b3c-b3fe-374623cdcf06 (Low battery action)
GUID Alias: BATACTIONLOW
Possible Setting Index: 000
Possible Setting Friendly Name: Do nothing
Possible Setting Index: 001
Possible Setting Friendly Name: Sleep
Possible Setting Index: 002
Possible Setting Friendly Name: Hibernate
Possible Setting Index: 003
Possible Setting Friendly Name: Shut down
Current AC Power Setting Index: 0x00000003
Current DC Power Setting Index: 0x00000003
Regardless my attempts, the Hyper-V host will shutdown at 10% battery level.
What am I missing?
0 Answers